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Date: Tue, 30 Mar 2004 22:40:15 +0200
From: Pawel Jakub Dawidek <pjd@FreeBSD.org>
To: Dag-Erling Sm?rgrav <des@des.no>
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cc: Robert Watson <rwatson@freebsd.org>
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Subject: Re: performance of jailed processes
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On Tue, Mar 30, 2004 at 09:09:35PM +0200, Dag-Erling Sm?rgrav wrote:
+> > Can you identify any micro-benchmarks rather than macro-benchmarks that
+> > reflect a significant difference?
+>=20
+> haven't had much luck with that...  fetch, for instance, doesn't seem
+> to suffer, but with mysql the difference is dramatic:
+>=20
+> (outside jail)
+> 1 row in set (0.01 sec)
+>=20
+> (inside jail)
+> 1 row in set (13.20 sec)
+>=20
+> note that 13 seconds is far too short for a DNS issue, and that the
+> time reported is measured *after* login (i.e. after any DNS lookup)

Could you produce some ktraces inside and outside jail?

--=20
Pawel Jakub Dawidek                       http://www.FreeBSD.org
pjd@FreeBSD.org                           http://garage.freebsd.pl
FreeBSD committer                         Am I Evil? Yes, I Am!

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